@covalent/core
Version:
Core Teradata UI Platform for layouts, icons, custom components and themes. This should be added as a dependency for any project that wants to use layouts, icons and themes for Angular Material.
43 lines • 5.61 kB
JavaScript
import { Subject } from 'rxjs';
const noop = () => {
// empty method
};
/** Mixin to augment a component with ngModel support. */
export function mixinControlValueAccessor(base, initialValue) {
return class extends base {
_value = initialValue instanceof Array
? Object.assign([], initialValue)
: initialValue;
_subjectValueChanges;
valueChanges;
constructor(...args) {
super(...args);
this._subjectValueChanges = new Subject();
this.valueChanges = this._subjectValueChanges.asObservable();
}
set value(v) {
if (v !== this._value) {
this._value = v;
this.onChange(v);
this._changeDetectorRef.markForCheck();
this._subjectValueChanges.next(v);
}
}
get value() {
return this._value;
}
writeValue(value) {
this.value = value;
this._changeDetectorRef.markForCheck();
}
registerOnChange(fn) {
this.onChange = fn;
}
registerOnTouched(fn) {
this.onTouched = fn;
}
onChange = (_) => noop;
onTouched = () => noop;
};
}
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